Carbon dioxide (CO.sub.2) capture materials comprising one or more 3D-printed zeolite monoliths for the capture and or removal of CO.sub.2 from air or gases in enclosed compartments, including gases or mixtures of gases having less than about 5% CO.sub.2. Methods for preparing 3D-printed zeolite monoliths useful as CO.sub.2 capture materials and filters, as well as methods of removing CO.sub.2 from a gas or mixture of gases in an enclosed compartment using 3D-printed zeolite monoliths are provided.

A device for separation of fluid species is disclosed. The device comprises at least one header connected to a monoblock. The header transitions one or more fluid streams between bulk flow and multi-channel flow patterns using a transition element. The header is attached to a monoblock, which conditions an untreated process fluid stream by adjusting the temperature of, and/or separating at least a portion of one or more fluid species from, the untreated process fluid stream. Fluid separation is accomplished by the use of high boiling point liquids infused into the pore structure of the monoblock with the outputs being a conditioned process fluid stream and an exhaust fluid stream. Methods of making the device and methods of using the device to separate at least a portion of fluid species from a process fluid stream are also disclosed.

A device for purifying gas, the device including a vessel having an inlet for gas to be purified and an outlet for purified gas. In the vessel two or more blocks of a purifying agent are arranged which are stacked on top of each other to form a stack, in which a seal is arranged between the stacked blocks, in which the blocks are being held together by: an element extending through the blocks; and/or an enclosure made of a non-elastic or flexible material which is arranged around the stack of blocks; and/or the fact that the seals are glued to the blocks.

A method of manufacturing a porous monolithic zeolite structure including the steps of; taking a porous monolithic substrate; forming one or more zeolites on the substrate; and substantially or completely removing the substrate.

An electrothermal swing adsorption system includes an electrothermal swing adsorption apparatus. The electrothermal swing adsorption apparatus includes a first chamber comprising at least one carbon monolith and a second chamber comprising at least one carbon monolith. The electrothermal swing adsorption apparatus receives a feed of air, desorbs at least one of moisture and air contaminants from the feed of air, discharges a dehumidified flow stream, and discharges a removal output flow stream of at least one of moisture and air contaminants.

The invention relates to a ventilation system (10) with heat recovery adsorber, the ventilation system (10) for being installed in buildings, wherein the ventilation system (10) furthermore comprises at least one exterior intake/outlet opening (11) for an air stream from outside of the building and at least one interior intake/outlet opening (23) for an air stream from inside the building, at least one air fan unit (14) and at least one filter unit (12, 22), wherein the heat recovery adsorber includes a heat exchange material (16) for absorbing and releasing heat from the air streams and a sorption material (18) for at least adsorbing and desorbing at least one sorbate from the air streams, wherein the at least one sorbate is water vapor, said sorption material (18) comprising at least one adsorbent for water vapor exhibiting an s-shaped water adsorption isotherm (30) at room temperature (25 C.+/10 C.) with a steep increase in a narrow relative humidity range, wherein a main loading lift of the adsorbent for water vapor occurs in the relative humidity range from 0.1 to 0.5 and the saturation capacity of the adsorbent for water vapor lies in the range from 0.25 to 1.2 kg.sub.water/kg.sub.adsorbent. The invention further relates to methods and uses for combined heat recovery, cooling/heating and dehumidifying/humidifying of air streams for buildings as well as such buildings.

A method for preparing a sorbent composition includes the steps of: applying, from a solution or a slurry, a layer of a copper compound on the surface of a support material, and drying the coated support material, wherein the thickness of the copper compound layer on the dried support is in the range 1-200 m.
The precursor may be converted to a sorbent suitable for removing heavy metals from liquids or gases by applying one or more sulphur compounds to sulphide the copper compound and form CuS.

The invention relates to the use of a high performance thermoplastic polymer binder material for immobilizing adsorptive materials, such as activated carbon, in gas storage devices. The use of these binders, especially polyamide binders or polyvinylidene fluoride such as Kyblock? resin, provides for high adsorbent packing density, low fouling solid structure that maximizes the volume of gas to the volume of the storage space.

The invention describes a housing which aerates stone dust with ambient air or stone dust in an aqueous solution with concentrated CO2, the stone dust having a defined degree of humidity in order to absorb CO2. So that the stone dust does not escape from inside the housing, a plate system with a filter ensures that the stone dust is fixed in a certain position in the container.

So that the stone dust, which is moistened with the help of water mist in the supply air, does not clump and can be aerated more efficiently, the plates are partially in a state of vibration, which is generated by a frequency-controlled vibrating mechanism.

To empty the housing, the arrangement is pivoted through 180? and opened.

Preferred stones for the aeration material are granite, gneiss, gabbro and basalt rocks. Under certain circumstances, metallic parts are removed with a magnet so that the stone dust material can be used as fertilizer.

Systems and methods of direct air capture are described. Systems include a plurality of moving adsorber panels in a linear direction (or circular configuration) and one or more fans configured to move air across the adsorber panels; such adsorber panels may be oriented vertically or horizontally, relative to the ground. Systems may include an independent regeneration box that comprises a system of headers, ducts and valves configured to deliver and remove a plurality of gases to the regeneration box. The regeneration box contains multiple chambers such that steps such as oxygen removal and panel cooling may be performed independently from and simultaneously to thermal preheating and desorption of the CO.sub.2 on the panels. The desorption panels may be configured to achieve counter-current flow to the hot gases used for thermal preheating and desorption. A multi-stage heat pump may facilitate reuse of waste heat and decarbonization of the process heating requirements.